- 1 -show off1、show off该短语动词意为“炫耀”，而 show sb./sth.off 意为“显示的优点”。如：He is a man who is always showing off.由 show 构成的短语动词有：show up 出现/出席，显眼；showover/round 带参观showin 领进入；showout 领/送出去如：Only three of the people we invited to the party didnt show up.1)用作名词：traffic signs 交通标志；road signs 路标；signs for the rest rooms 厕所标志；signs of heart trouble 心脏病的迹象，signs of rain/earthquake 下雨/地震的预兆。2）用作动词，表示“签名，作手势”。如：sign ones name 签名；sign to sb. 朝某人做手势；sign the agreement 签署协议；sign to sb.to do sth. 做手势让某人干某事。完成句子董事长在文件上签了名。The president_ _ _to the paper.警察做手势叫我停下。The policeman _ _ _ _.Key:singed,h is,name singed,me,to,stop- 2 -3、single/not a singlesingle 是形容词，有“单一的，单个的，单身的，唯一的”意义；not a single 表示“一个也没有”，起强调作用，位于句首时引起倒装。如：remain single 尚未成婚；the single person 唯一的人；a single bed/ ticket/ man/ room 单人床/ 单程票/ 独身男子/ 单人房间He didnt make a single mistake in the exam./Not a single mistake did he make in the exam.他在考试中没出一处错误。汉译英今天上午这个商店里一个人也没有。他是能帮助我们的唯一的人。Key: Not a single person has been in the shop this morning.Hes the single person that can help us.